Versus Engine
Mac Studio (M3 Ultra) vs Nvidia GeForce RTX 5090 (32GB)
Specs, price and the one trade-off that actually decides it — Mac Studio (M3 Ultra) against Nvidia GeForce RTX 5090 (32GB), side by side.
Cheaper to start
Nvidia GeForce RTX 5090 (32GB)
Starts about $2,000 lower.
Rated higher
Mac Studio (M3 Ultra)
9.8 vs 9.7 on our design scale.
Standout
Mac Studio (M3 Ultra)
819 GB/s unified memory bandwidth
Mac Studio (M3 Ultra)
Apple's compact workstation, now with 819 GB/s of unified memory bandwidth.
Where it wins, where it doesn't
Pros
- 819 GB/s unified memory bandwidth
- Very large unified memory pool holds models that exceed consumer VRAM
- Near-silent and power-efficient for the capability
Cons
- Outside the CUDA ecosystem — training and custom kernels are awkward
- Memory is fixed at purchase and cannot be upgraded
- Raw compute per pound trails a discrete GPU build
Specifications
- memory—
- cuda_cores—
- memory_bus—
- architecture—
- recommended_psu—
- memory_bandwidth—
- total_graphics_power—
Nvidia GeForce RTX 5090 (32GB)
The fastest consumer card available, with 32GB of GDDR7 — and the power bill to match.
Where it wins, where it doesn't
Pros
- 32GB GDDR7 — runs 70B-class models quantised on a single card
- Fastest consumer silicon available
- Avoids the complexity of a multi-GPU build
Cons
- Roughly double the 5080's price for far less than double the performance
- 600W-class power delivery dictates case and PSU choices
- Poor value for anything that is not memory-bound
Specifications
- memory32GB GDDR7
- cuda_cores21760
- memory_bus512-bit
- architectureBlackwell
- recommended_psu1000W
- memory_bandwidth1792 GB/s
- total_graphics_power575W